We look at the division of 424722 by 72 
The aim is to understand the frequency of 72 in 424722.

On to step 1:
If we divide 4 by 72, we get 0 and a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Bring next digit (2) of the dividend behind the 4 and repeat the process: 42 / 72

Moving on to step 2:
When dividing 42 by 72, we get 0 with a remainder of 42.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 42 to get 42.
Include the next digit (4) from the dividend after 42, then repeat: 424 / 72

Step 3:
If we divide 424 by 72, we get 5 and a remainder of 64.
Put 5 as the next digit of the answer. 
Result so far: 5.0
Subtract 360 from 424 to get 64.
Take the next digit (7) from the dividend and append it to 64, then repeat: 647 / 72

Let's proceed to step 4:
72 goes into 647 8 times with a remainder of 71.
Use 8 as the next digit of our solution. 
Result so far: 58.0
If we subtract 576 from 647, we get 71.
Take the next digit (2) from the dividend and append it to 71, then repeat: 712 / 72

Advancing to step 5:
712 divided by 72 is 9 with a remainder of 64.
Record the quotient 9 as the next digit in the result. 
Result so far: 589.0
If we subtract 648 from 712, we get 64.
Fetch the next digit (2) from the dividend, attach it to 64 and continue: 642 / 72

Advancing to step 6:
72 goes into 642 8 times with a remainder of 66.
Put 8 as the next digit of the answer. 
Result so far: 5898.0
Subtracting 576 from 642 leaves us with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Let's proceed to step 7:
When dividing 660 by 72, we get 9 with a remainder of 12.
Use 9 as the next digit of our solution. 
Result so far: 5898.9
Subtracting 648 from 660 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 8:
When dividing 120 by 72, we get 1 with a remainder of 48.
Write down 1 as next digit of the result. 
Result so far: 5898.91
Subtract 72 from 120 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 9:
When dividing 480 by 72, we get 6 with a remainder of 48.
Write down 6 as next digit of the result. 
Result so far: 5898.916
Subtracting 432 from 480 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

On to step 10:
72 goes into 480 6 times with a remainder of 48.
Record the quotient 6 as the next digit in the result. 
Result so far: 5898.9166
If we take 432 away from 480, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Our division results in 5898.9166 with a remaining 0.00048.